- quinquangular
[quinquangular 词源字典]
- "Having five angles or corners; pentagonal", Mid 17th cent.; earliest use found in William Bedwell (bap. 1563, d. 1632), Arabist and mathematician. From classical Latin quīnque five + angular. Compare post-classical Latin quinquangularis, French quinquangulaire.[quinquangular etymology, quinquangular origin, 英语词源]